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2020 | OriginalPaper | Buchkapitel

13. Multi-Input Multi-Output Swept Sine Control: A Steepest Descent Solution for a Challenging Problem

verfasst von : Umberto Musella, Bart Peeters, Francesco Marulo, Patrick Guillaume

Erschienen in: Special Topics in Structural Dynamics & Experimental Techniques, Volume 5

Verlag: Springer International Publishing

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Abstract

Multiple-Input Multiple-Output (MIMO) swept sine is nowadays acknowledged to be one of the best excitation techniques in applications where testing time is a constraint and high-quality Frequency Response Functions are compulsory. This is the case, for example, of testing large aerospace structures for model validation and updating. The high levels that can be reached during these tests can require a reliable MIMO closed-loop control strategy in order to guarantee that the response spectra will follow safe reference profiles (within defined tolerance limits). The development of a dedicated algorithm for these applications is however very challenging, especially due to the transient nature of the sweeps and the robustness of the MIMO controller. This paper proposes a steepest descent solution for the control of multiple inputs during a continuous sine-sweep, in order to simultaneously match specific response spectra for multiple control channels.

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Fußnoten
1
For this uncoupled example, the axes of the ellipsoidal cost function’s contours are well-aligned with the plane defined by the components of u u opt. This simplification, associated to the choice of controlling an uncoupled system, allows to draw considerations on the physical system, but generally these considerations are strictly valid only in the transformed space.
 
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Metadaten
Titel
Multi-Input Multi-Output Swept Sine Control: A Steepest Descent Solution for a Challenging Problem
verfasst von
Umberto Musella
Bart Peeters
Francesco Marulo
Patrick Guillaume
Copyright-Jahr
2020
DOI
https://doi.org/10.1007/978-3-030-12243-0_13

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